CVE-2025-38717 - net: kcm: Fix race condition in kcm_unattach()

CVE-2025-38717 - net: kcm: Fix race condition in kcm_unattach()

https://cvefeed.io/rssfeed/latest.atom / Thu, 09/04/2025 - 20:37
CVE ID : CVE-2025-38717
Published : Sept. 4, 2025, 3:33 p.m. | 1 hour, 6 minutes ago
Description : In the Linux kernel, the following vulnerability has been resolved: net: kcm: Fix race condition in kcm_unattach() syzbot found a race condition when kcm_unattach(psock) and kcm_release(kcm) are executed at the same time. kcm_unattach() is missing a check of the flag kcm->tx_stopped before calling queue_work(). If the kcm has a reserved psock, kcm_unattach() might get executed between cancel_work_sync() and unreserve_psock() in kcm_release(), requeuing kcm->tx_work right before kcm gets freed in kcm_done(). Remove kcm->tx_stopped and replace it by the less error-prone disable_work_sync().
Severity: 0.0 | NA
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